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Publication numberUS9568005 B2
Publication typeGrant
Application numberUS 14/974,206
Publication date14 Feb 2017
Filing date18 Dec 2015
Priority date8 Dec 2010
Also published asCA2820887A1, CN103477075A, CN103477075B, EP2649318A2, EP2649318A4, US9243413, US20120145251, US20160138727, WO2012078862A2, WO2012078862A3
Publication number14974206, 974206, US 9568005 B2, US 9568005B2, US-B2-9568005, US9568005 B2, US9568005B2
InventorsRonald B. Robol, Daniel J. Hruby, Johnathan Steven Colvin
Original AssigneePentair Water Pool And Spa, Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Discharge vacuum relief valve for safety vacuum release system
US 9568005 B2
Abstract
A discharge vacuum relief valve kit to provide vacuum relief for a SVRS pump in a hydraulic system is provided. The discharge vacuum relief valve kit includes a vacuum vent tube including a first end and a second end, a discharge vacuum relief valve coupled to the first end of the vacuum vent tube, and a vacuum vent screen coupled to the second end of the vacuum vent tube. The discharge vacuum relief valve is coupled to a drain plug opening of the SVRS pump.
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Claims(18)
The invention claimed is:
1. A method of providing discharge vacuum relief for a safety vacuum release system pump in a hydraulic system with discharge check valves, the method comprising:
providing a discharge vacuum relief valve kit including a vacuum vent tube with a first end and a second end, a discharge vacuum relief valve coupled to the first end of the vacuum vent tube, and a vacuum vent screen coupled to the second end of the vacuum vent tube;
coupling the discharge vacuum relief valve to a drain plug opening of the safety vacuum release system pump;
monitoring input power to the safety vacuum release system pump to detect a vacuum event on a suction side of the safety vacuum release system pump;
shutting down the safety vacuum release system pump when the vacuum event is detected on the suction side in order to relieve the vacuum event;
monitoring pressure on a discharge side of the safety vacuum release system pump; and
venting the discharge side of the safety vacuum release system pump when a vacuum is detected on the discharge side to prevent delayed response time in relieving the vacuum event on the suction side.
2. The method of claim 1 further comprising detecting a vacuum on the discharge side when the monitored pressure is about 1.5 pounds per square inch.
3. The method of claim 1 further comprising monitoring the pressure with the discharge vacuum relief valve and opening the discharge vacuum relief valve when the vacuum is detected in order to vent the discharge side.
4. The method of claim 1 further comprising positioning a free end of the vacuum vent tube above all bodies of water in the hydraulic system.
5. The method of claim 1, wherein the vacuum vent screen includes a polyvinyl chloride base and a stainless steel mesh screen.
6. The method of claim 1, wherein the step of monitoring at least input power to the safety vacuum release system pump to detect a vacuum event includes monitoring a change in input power.
7. A method of providing discharge vacuum relief for a safety vacuum release system pump in a hydraulic system with discharge check valves, the method comprising:
providing a vacuum vent tube with a first end and a second, free end;
coupling a discharge vacuum relief valve to the first end of the vacuum vent tube;
routing the vacuum vent tube upward from its first end so that its second, free end is above a maximum water level in all bodies of water in the hydraulic system;
coupling a vacuum vent screen to the second end of the vacuum vent tube; and
venting the safety vacuum release system pump when a vacuum is detected.
8. The method of claim 7, wherein the discharge vacuum relief valve is coupled to the first end of the vacuum vent tube by a compression fit.
9. The method of claim 7, wherein the vacuum vent tube is routed upward from its first end so that its second end is above all bodies of water connected to the pump.
10. The method of claim 7 further comprising coupling the discharge vacuum relief valve to a drain plug opening of the safety vacuum release system pump.
11. The method of claim 7 further including the steps of monitoring input power to the safety vacuum release system pump to detect a vacuum event on a suction side of the safety vacuum release system pump, shutting down the safety vacuum release system pump when the vacuum event is detected on the suction side in order to relieve the vacuum event, monitoring pressure on a discharge side of the safety vacuum release system pump, and venting the discharge side of the safety vacuum release system pump when a vacuum is detected on the discharge side to prevent delayed response time in relieving the vacuum event on the suction side.
12. The method of claim 11, wherein the step of monitoring at least input power to the safety vacuum release system pump to detect a vacuum event includes monitoring a change in input power.
13. A method of providing discharge vacuum relief for a safety vacuum release system pump in a hydraulic system with discharge check valves, the method comprising:
providing a vacuum vent tube with a first end, a second, free end, and a discharge vacuum relief valve coupled to the first end of the vacuum vent tube;
routing the vacuum vent tube upward from its first end so that its second, free end is above a maximum water level in all bodies of water in the hydraulic system; and
venting the safety vacuum release system pump when a vacuum is detected.
14. The method of claim 13, wherein the discharge vacuum relief valve is coupled to the first end of the vacuum vent tube by a compression fit.
15. The method of claim 13, wherein the vacuum vent tube is routed upward from its first end so that its second end is above all bodies of water connected to the pump.
16. The method of claim 13, further comprising the step of coupling the discharge vacuum relief valve to a drain plug opening of the safety vacuum release system pump.
17. The method of claim 13, further including the steps of monitoring input power to the safety vacuum release system pump to detect a vacuum event on a suction side of the safety vacuum release system pump, shutting down the safety vacuum release system pump when the vacuum event is detected on the suction side in order to relieve the vacuum event, monitoring pressure on a discharge side of the safety vacuum release system pump, and venting the discharge side of the safety vacuum release system pump when a vacuum is detected on the discharge side to prevent delayed response time in relieving the vacuum event on the suction side.
18. The method of claim 17, wherein the step of monitoring at least input power to the safety vacuum release system pump to detect a vacuum event includes monitoring a change in input power.
Description
RELATED APPLICATIONS

This application claims priority to U.S. Provisional Patent Application No. 61/421,069 filed on Dec. 8, 2010, and U.S. patent application Ser. No. 13/314,798 filed on Dec. 8, 2011, the entire contents of which are incorporated herein by reference.

BACKGROUND

In swimming pools and spas, safety vacuum release systems (SVRS) have been developed for the removal of suction in a line of the circulation system between the pump and a blocked outlet. SVRS devices can shut down the pump when a blockage is detected at a pool drain and the suction side of the pump in order to relieve suction and prevent body entrapment. If a check valve is installed on a discharge side of the circulation system, for example to prevent the backflow of water, it can also prevent or slow the relief of the suction. As a result, vacuum forces, such as those entrapping a swimmer against a drain of the swimming pool, may remain in place longer than current standards allow. In some swimming pools, the presence of a check valve can render an SVRS device ineffective.

SUMMARY

Some embodiments provide a discharge vacuum relief valve kit to provide vacuum relief for a SVRS pump in a hydraulic system. The discharge vacuum relief valve kit includes a vacuum vent tube including a first end and a second end, a discharge vacuum relief valve coupled to the first end of the vacuum vent tube, and a vacuum vent screen coupled to the second end of the vacuum vent tube. The discharge vacuum relief valve is coupled to a drain plug opening of the SVRS pump.

Some embodiments provide a method of providing discharge vacuum relief for a safety vacuum release system pump in a hydraulic system with discharge check valves. The method includes the steps of providing a discharge vacuum relief valve kit including a vacuum vent tube with a first end and a second end, a discharge vacuum relief valve coupled to the first end of the vacuum vent tube, and a vacuum vent screen coupled to the second end of the vacuum vent tube. Input power to the safety vacuum release system pump is monitored to detect a vacuum event on a suction side of the safety vacuum release system pump. The safety vacuum release system pump is shut down when the vacuum event is detected on the suction side in order to relieve the vacuum event. Pressure is monitored on a discharge side of the safety vacuum release system pump and the discharge side of the safety vacuum release system pump is vented when a vacuum is detected on the discharge side to prevent delayed response time in relieving the vacuum event on the suction side.

Some embodiments provide a method of providing discharge vacuum relief for a safety vacuum release system pump in a hydraulic system with discharge check valves. A vacuum vent tube with a first end and a second end is provided. A discharge vacuum relief valve is coupled to the first end of the vacuum vent tube. The vacuum vent tube is routed upward from its first end. A vacuum vent screen is coupled to the second end of the vacuum vent tube and the safety vacuum release system pump is vented when a vacuum is detected.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a hydraulic system with a discharge vacuum relief valve according to one embodiment of the invention.

FIG. 2 is a perspective view of a safety vacuum release system (SVRS) pump for use with the system of FIG. 1.

FIG. 3 is a schematic view of a discharge vacuum relief valve kit coupled to a SVRS pump according to one embodiment of the invention.

FIG. 4 is a perspective view of a discharge vacuum relief valve according to one embodiment of the invention.

FIG. 5 is a partial perspective view of the discharge vacuum relief valve of FIG. 4 coupled to a SVRS pump.

FIG. 6 is a discharge vacuum relief valve kit according to one embodiment of the invention.

FIGS. 7A-7C are front, side, and rear views, respectively, and example dimensions of a discharge vacuum relief valve for use with the discharge vacuum relief valve kit of FIG. 6.

FIGS. 8A-8C are perspective, side, and rear views, respectively, and example dimensions of a vacuum vent screen for use with the discharge vacuum relief valve kit of FIG. 6.

FIGS. 9A and 9B are graphs illustrating time and pressure measurements of a SVRS pump with a discharge vacuum relief valve, in accordance with one embodiment of the invention, and a pump without a discharge vacuum relief valve, respectively.

DETAILED DESCRIPTION

Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, “connected” and “coupled” are not restricted to physical or mechanical connections or couplings.

The following discussion is presented to enable a person skilled in the art to make and use embodiments of the invention. Various modifications to the illustrated embodiments will be readily apparent to those skilled in the art, and the generic principles herein can be applied to other embodiments and applications without departing from embodiments of the invention. Thus, embodiments of the invention are not intended to be limited to embodiments shown, but are to be accorded the widest scope consistent with the principles and features disclosed herein. The following detailed description is to be read with reference to the figures, in which like elements in different figures have like reference numerals. The figures, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of embodiments of the invention. Skilled artisans will recognize the examples provided herein have many useful alternatives and fall within the scope of embodiments of the invention.

Some embodiments of the invention provide a hydraulic system including a pump with a SVRS, discharge check valves, and a discharge vacuum relief valve. The discharge vacuum relief valve can help prevent a vacuum on a suction side of the hydraulic system from being transferred to a discharge side of the hydraulic system, affecting the discharge check valves and interfering with suction relief generated by the SVRS. As a result, the SVRS can react to suction events, such as body entrapment, virtually undisturbed by the presence of the discharge check valves.

FIG. 1 illustrates a hydraulic system 10 in which embodiments of the invention can be used. The hydraulic system 10 can include a swimming pool 12 and/or other water features, such as a waterfall 14. In some embodiments, the hydraulic system 10 can also include a spa (not shown). The hydraulic system 10 can include a main pump 16 and other components such as a filter 18, a solar heating system 20 with a solar pump 22, a heater 24, a chlorine generator 26, a cleaner pump 28 for a pool cleaner 30, a pool light 32, sensors 34, etc. A controller load center 36, including a wired control panel 38 and/or a wireless control panel 40 and a wireless transceiver 42, can control the components of the hydraulic system 10. In other embodiments, the hydraulic system 10 can include more or less components than those shown in FIG. 1.

Water can be directed through the hydraulic system 10 by the pumps 16, 22, 28 and a series of multi-port valves 44. For example, water can be drained from the swimming pool 12 through a main drain 46 and/or a skimmer 48, can be filtered, heated, and/or chlorinated, and then supplied back to the swimming pool 12 through the pool cleaner 30, discharge outlets 50, and/or the waterfall 14. The hydraulic system 10 can also include one or more discharge check valves 52 located at one or more locations along a discharge side of the hydraulic system 10 (e.g., on a discharge or pressure side of the main pump 16, as opposed to a supply or suction side). The discharge check valves 52 can prevent water from draining from the plumbing and equipment located on the discharge side of the hydraulic system 10. For example, the discharge check valve 52 between the heater 24 and the chlorine generator 26 can prevent the backflow of chlorine into the heater 24. In another example, the discharge check valve 52 between the solar heating system 20 and the heater 24 can prevent the backflow of water into the solar heating system 20 when it is not in use.

In some embodiments, the main pump 16 can be a variable speed, SVRS (SVRS) pump, as shown in FIG. 2. The main pump 16 can include a housing 54, a variable speed motor 56, and an on-board controller 58. In one embodiment, the motor 56 can be driven at four or more different speeds. The housing 54 can include an inlet 60, an outlet 62, one or more drain plugs 63, a basket 64, a lid 66, and a stand 68. The stand 68 can support the motor 56 and can be used to mount the main pump 16 on a suitable surface (not shown).

In some embodiments, the on-board controller 58 can be enclosed in a case 70. The case 70 can include a field wiring compartment 72 and a cover 74. The cover 74 can be opened and closed to allow access to the on-board controller 58 and protect it from moisture, dust, and other environmental influences. The case 70 can be mounted on the motor 56. In some embodiments, the field wiring compartment 72 is capable of being coupled to a power supply to provide power to the motor 56 and the on-board controller 58.

In some embodiments, the motor 56 can include a coupling (not shown) to connect to the on-board controller 58. In some embodiments, the on-board controller 58 can automatically operate the main pump 16 according to at least one schedule. In some embodiments, the on-board controller 58 can allow a manual operation of the main pump 16. For example, in some embodiments, the on-board controller 58 can include a manual override. The manual override can interrupt the scheduled and/or manual operation of the main pump 16 to allow for, e.g., cleaning and maintenance procedures.

In some embodiments, the on-board controller 58 can monitor the operation of the main pump 16 and can indicate abnormal conditions of the main pump 16. For example, the on-board controller 58 (e.g., internal software of the on-board controller 58) can include the SVRS in order to stop or shut down the main pump 16 when a vacuum is detected (e.g., due to a blockage such as body entrapment) in order to relieve the vacuum. The SVRS can be used as a protective device to prevent a body entrapment event on suction fittings like the main drain 46 of the swimming pool 12 or a spa. In one embodiment, a vacuum event can be detected by monitoring changes in input power to the motor 56.

In conventional hydraulic systems, when discharge check valves are used in conjunction with a SVRS, they can reduce the reaction time on the SVRS to the point that the release system will not pass the closure times required by pool operating standards and regulations (i.e., the discharge check valves can slow the response time of the SVRS). For example, a typical body entrapment event causes a vacuum level on the suction side of the system to increase very quickly. That vacuum can transfer into the pressure side of the system (i.e., the discharge side) and, when the system is equipped with discharge check valves, that vacuum can increase the sealing force on the discharge check valves and delay the SVRS from recognizing the presence of the body entrapment event and shutting down the pump to relieve the vacuum.

In some embodiments, as shown in FIGS. 1 and 3-7C, the hydraulic system 10 can include a discharge vacuum relief valve 76. The discharge vacuum relief valve 76 can allow the SVRS to function normally despite use of the discharge check valves 52 in the hydraulic system 10. The discharge vacuum relief valve 76 can be a vacuum sensing valve (e.g., a spring-loaded check valve) positioned on the discharge side of the hydraulic system 10. When the discharge vacuum relief valve 76 recognizes a vacuum level, it can open (i.e., provide a vent) in order to let air into the discharge side of the main pump 16, preventing the vacuum from transferring over to the discharge side and delaying detection by the SVRS of the main pump 16. As a result, the SVRS can react undisturbed by the presence of the discharge check valves 52 in the hydraulic system 10.

In some embodiments as shown in FIGS. 3 and 5, the discharge vacuum relief valve 76 can be coupled to a drain plug opening 78 of the main pump 16 (e.g., by removing one of the drain plugs 63). The drain plug opening 78 and the discharge vacuum relief valve 76 can be coupled together via threading on the drain plug opening 78 and threading 75 (as shown in FIGS. 4 and 7B) on the discharge vacuum relief valve 76. As shown in FIGS. 3, 5, and 6, a vacuum vent tube 80 can be coupled to an end 77 of the discharge vacuum relief valve 76 by a compression fit (e.g., with a compression fitting such as a collar 81, a metal ring, a sleeve, or another suitable fitting). The vacuum vent tube 80 can be routed upward from its first end 79 coupled to the discharge vacuum relief valve 76 so that its second, free end 81 is above all bodies of water connected to the main pump 16, as shown in FIG. 3, or at least so that its free end 81 is above a maximum water level in all bodies of water in the hydraulic system 10. In addition, a vacuum vent screen 82 can be coupled to the free end 81 of the vacuum vent tube 80 to protect the discharge vacuum relief valve 76 and the vacuum vent tube 80 from dirt, insects, and other contaminants that could interfere with operation of the discharge vacuum relief valve 76.

In some embodiments, as shown in FIG. 6, the discharge vacuum relief valve 76, the vacuum vent tube 80, and the vacuum vent screen 82 can be provided as a discharge vacuum relief kit 84 to be coupled to a SVRS pump 16 being installed in existing hydraulic systems 10 with discharge check valves 52. For example, in discharge vacuum relief kit 84 of FIG. 6, the vacuum vent tube 80 can be a ⅜-inch thick tube, the vacuum relief valve can include the dimensions shown in FIGS. 7A and 7C, and the vacuum vent screen 82 can include the dimensions shown in FIGS. 8B and 8C. In one embodiment, the vacuum vent screen 82 can include a polyvinyl chloride (PVC) base 86 and a stainless steel mesh screen 88.

In some embodiments, characteristics of the discharge vacuum relief valve 76, such as allowed air flow (e.g., in cubic feet per minute) and pressure rating (e.g., in pounds per square inch) can be selected based on the type of swimming pool and/or spa application or, more generally, on the types of bodies of water in the hydraulic system 10. In one embodiment, the discharge vacuum relief valve 76 can have a pressure vent rating of about 1.5 pounds per square inch.

FIGS. 9A and 9B illustrate discharge pressure and vacuum pressure measured in a SVRS pump 16 with a discharge vacuum relief valve 76 and a SVRS pump without a discharge vacuum relief valve, respectively. As shown in FIGS. 9A and 9B, a vacuum event occurs at time T1, causing both the suction pressure and the discharge pressure to drop. As shown in FIG. 9A, the discharge vacuum relief valve 76 is triggered (i.e., around time T2), relieving the vacuum and causing both the discharge pressure and the suction pressure to ramp upward to about zero. As shown in FIG. 9B, without the presence of the discharge vacuum relieve valve 76, both the discharge pressure and the suction pressure continue to stay in a vacuum state (i.e., are maintained at negative pressures).

It will be appreciated by those skilled in the art that while the invention has been described above in connection with particular embodiments and examples, the invention is not necessarily so limited, and that numerous other embodiments, examples, uses, modifications and departures from the embodiments, examples and uses are intended to be encompassed by the claims attached hereto. The entire disclosure of each patent and publication cited herein is incorporated by reference, as if each such patent or publication were individually incorporated by reference herein. Various features and advantages of the invention are set forth in the following claims.

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36540X46-Hopkins; "High-Temperature, High-Oensity . . . Embedded Operation;" pp. 1-8; cited in Civil Action 5:11-cv-004590; Mar. 2006.
37540X47-Hopkins; "Optimally Selecting Packaging Technologies . . . Cost & Performance;" pp. 1-9; cited in Civil Action 5:11-cv-004590; Jun. 1999.
38540X48-Hopkins; "Partitioning Oigitally . . . Applications to Ballasts;" pp. 1-6; cited in Civil Action 5:11-cv-00459D.
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4254DX19-STMicroelectronics; "AN1276 BLOC Motor Start Routine for ST72141 Microcontroller;" 2000; pp. 1-18; cited in Civil Action 5:11-cv-004590.
4354DX21-Danfoss; "VLT 8000 Aqua Instruction Manual;" Apr. 2004; 1-210; Cited in Civil Action 5:11-cv-004590.
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4554DX23-Commander; "Commander SE Advanced User Guide;" Nov. 2002; pp. 1-190; cited in Civil Action 5:11-cv-004590.
4654DX32-Hopkins; "High-Temperature, High-Density . . . Embedded Operation;" pp. 1-8; cited in Civil Action 5:11-cv-00459D.
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487-Motion for Preliminary Injunction by Danfoss Drives A/S & Pentair Water Pool & Spa, Inc. with respect to Civil Action No. 5:11-cv-00459D.
497-Motion for Preliminary Injunction by Danfoss Drives AIS & Pentair Water Pool & Spa, Inc. with respect to Civil Action No. 5:11-cv-00459-D; Sep. 30, 2011.
5089-Reply to Response to Motion for Preliminary Injunction Filed by Danfoss Drives A/S & Pentair Water Pool & Spa, Inc. for Civil Action 5:11-cv-004590; Jan. 3, 2012.
519PX10-Pentair; "IntelliPro VS+SVRS Intelligent Variable Speed Pump;" 2011; pp. 1-6; cited in Civil Action 5:11-cv-00459D.
529PX11-Pentair; "IntelliTouch Pool & Spa Control Control Systems;" 2011; pp. 1-5; cited in Civil Action 5:11-cv-004590.
539PX14-Pentair; "IntelliFio Installation and User's Guide;" pp. 1-53; Jul. 26, 2011; Sanford, NC; cited in Civil Action 5:11-cv-004590.
549PX16-Hayward Pool Products; "EcoStar Owner's Manual (Rev. B);" pp. 1-32; Elizabeth, NJ; cited in Civil Action 5:11-cv-00459D; 2010.
559PX17-Hayward Pool Products; "EcoStar & EcoStar SVRS Brochure;" pp. 1-7; Elizabeth, NJ; cited in Civil Action 5:11-cv-00459D; Sep. 30, 2011.
569PX19-Hayward Pool Products;"Hayward Energy Solutions Brochure;" pp. 1-3; www.haywardnet.com; cited in Civil Action 5:11-cv-00459D; Sep. 2011.
579PX20-Hayward Pool Products; "ProLogic Installation Manual (Rev. G);" pp. 1-25; Elizabeth, NJ; cited in Civil Action 5:11-cv-00459D; Sep. 2011.
589PX21-Hayward Pool Products; "ProLogic Operation Manual (Rev. F);" pp. 1-27; Elizabeth, NJ; cited in Civil Action 5:11-cv-00459D; Sep. 2011.
599PX22-Hayward Pool Products; "Wireless & Wired Remote Controls Brochure;" pp. 1-5; 2010; Elizabeth, NJ; cited in Civil Action 5:11-cv-00459D.
609PX23-Hayward Pool Products; Selected Pages from Hayward's Website:/www.hayward-pool.com; pp. 1-27; cited in Civil Action 5:11-cv-004590; Sep. 2011.
619PX28-Hayward Pool Products; "Selected Page from Hayward's Website Relating to EcoStar Pumps;" p. 1; cited in Civil Action 5:11-cv-00459D; Sep. 2011.
629PX29-Hayward Pool Products; "Selected Page from Hayward's Website Relating to EcoStar SVRS Pumps;" cited in Civil Action 5:11-cv-00459; Sep. 2011.
639PX30-Hayward Pool Systems; "Selected Pages from Hayward's Website Relating to ProLogic Controllers;" pp. 1-5; Civil Action 5:11-cv-00459D; Sep. 2011.
649PX-42-Hayward Pool Systems; "Hayward EcoStar & EcoStar SVRS Variable Speed Pumps Brochure;" Civil Action 5:11-cv-00459D; 2010.
659PX5-Pentair; Selected Website Pages; pp. 1-29; cited in Civil Action 5:11-cv-004590; Sep. 2011.
669PX6-Pentair; "IntelliFio Variable Speed Pump" Brochure; 2011; pp. 1-9; cited in Civil Action 5:11-cv-004590.
679PX7-Pentair; "IntelliFio VF Intelligent Variable Flow Pump;" 2011; pp. 1-9; cited in Civil Action 5:11-cv-004590.
689PX8-Pentair; "IntelliFio VS+SVRS Intelligent Variable Speed Pump;" 2011; pp. 1-9; cited in Civil Action 5:11-cv-004590.
699PX9-Sta-Rite; "IntelliPro Variable Speed Pump;" 2011; pp. 1-9; cited in Civil Action 5:11-cv-004590.
70Allen-Bradley; "1336 Plus II Adjustable Frequency AC Drive with Sensorless Vector User Manual;" Sep. 2005; pp. 1-212.
71Amended Complaint Filed by Pentair Water Pool & Spa, Inc. and Danfoss Drives A/S with respect to Civil Action No. 5:11-cv-00459, adding U.S. Pat. No. 8,043,070.
72AMTROL Inc.; "AMTROL Unearths the Facts About Variable Speed Pumps and Constant Pressure Valves;" pp. 1-5; Mar. 2002; West Warwick, RI USA.
73Baldor; "Balder Motors and Drives Series 14 Vector Drive Control Operating & Technical Manual;" Mar. 22, 1992; pp. 1-92.
74Baldor; "Baldor Series 10 Inverter Control: Installation and Operating Manual"; Feb. 2000; pp. 1-74.
75Bibliographic Data Sheet-U.S. Appl. No. 10/730,747 Applicant: Robert M. Koehl Reasons for Inclusion: Printed publication US 2005/0123408 A1 for U.S. Appl. No. 10/730,747 has incorrect filing date.
76Bimal K. Bose-The University of Tennessee, Knoxville, Modem Power Electronics and AC Drives, book, Copyright 2002, 728 pages, Prentice-Hall, Inc., Upper Saddle River, New Jersey.
77Bjarke Soerensen; "Have You Chatted With Your Pump Today?" Undated Article Reprinted with Permission of Grundfos Pump University; pp. 1-2; USA.
78Board Decision for Appeal 2015-007909, Reexamination Control 95/002,008, U.S. Pat. No. 7,686,587B2 dated Apr. 1, 2016.
79Brochure entitled "Constant Pressure Water for Private Well Systems," for Myers Pentair Pump Group, Jun. 28, 2000.
80Brochure for AMTROL, Inc. entitled "AMTROL unearths the facts about variable speed pumps and constant pressure valves," Mar. 2002.
81Cliff Wyatt, "Monitoring Pumps," World Pumps, vol. 2004, Issue 459, Dec. 2004, pp. 17-21.
82Commander; "Commander SE Advanced User Guide;" Nov. 2002; pp. 1-118.
83Compool; "Compool CP3800 Pool-Spa Control System Installation and Operating Instructions;" Nov. 7, 1997; pp. 1-45.
84Danfoss, SALT Drive Systems, "Increase oil & gas production, Minimize energy consumption", copyright 2011, pp. 1-16.
85Danfoss, VLT 8000 AQUA Operating Instructions, coded MG.80.A2.02 in the footer, 181 pages.
86Danfoss, VLT® AQUA Drive, "The ultimate solution for Water, Wastewater, & Irrigation", May 2007, pp. 1-16.
87Danfoss; "Danfoss VLT 6000 Series Adjustable Frequency Drive Installation, Operation and Maintenance Manual;" Mar. 2000; pp. 1-118.
88Danfoss; "VLT8000 Aqua Instruction Manual;" Apr. 16, 2004; pp. 1-71.
89Dinverter; "Dinverter 28 User Guide;" Nov. 1998; pp. 1-94.
90Docket Report for Case No. 5:11-cv-00459-D; Nov. 2012.
91Email Regarding Grundfos' Price Increases/SQ/SQE Curves; pp. 1-7; Dec. 19, 2001.
92F.E. Myers; "Featured Product: F.E. Myers Introducts Revolutionary Constant Pressure Water System;" pp. 1-8; Jun. 28, 2000; Ashland, OH USA.
93Flotec Owner's Manual, dated 2004. 44 pages.
94Franklin Electric; "CP Water-Subdrive 75 Constant Pressure Controller" Product Data Sheet; May 2001; Bluffton, IN USA.
95Franklin Electric; "Franklin Aid, Subdrive 75: You Made It Better;" vol. 20, No. 1; pp. 1-2; Jan./Feb. 2002; www.franklin-electric.com.
96Franklin Electric; "Franklin Application Installation Data;" vol. 21, No. 5, Sep./Oct. 2003; pp. 1-2; www.franklin-electric.com.
97Franklin Electric; "Monodrive MonodriveXT Single-Phase Constant Pressure;" Sep. 2008; pp. 1-2; Bluffton, IN USA.
98Franklin Electric; Constant Pressure in Just the Right Size; Aug. 2006; pp. 1-4; Bluffton, IN USA.
99Glentronics Home Page, dated 2007. 2 pages.
100Goulds Pumps SPBB Battery Back-Up Pump Brochure, dated 2008. 2 pages.
101Goulds Pumps SPBB/SPBB2 Battery Backup Sump Pumps, dated 2007.
102Goulds Pumps; "Balanced Flow Submersible System Informational Seminar;" pp. 1-22; Undated.
103Goulds Pumps; "Balanced Flow Submersible System Installation, Operation & Trouble-Shooting Manual;" pp. 1-9; 2000; USA.
104Goulds Pumps; "Balanced Flow System . . . The Future of Constant Pressure Has Arrived;" Undated Advertisement.
105Goulds Pumps; "Balanced Flow System Brochure;" pp. 1-4; 2001.
106Goulds Pumps; "Balanced Flow System Model BFSS Variable Speed Submersible Pump System" Brochure; pp. 1-4; Jan 2001; USA.
107Goulds Pumps; "Balanced Flow System Model BFSS Variable Speed Submersible Pump" Brochure; pp. 1-3; Jan. 2000; USA.
108Goulds Pumps; "Balanced Flow System Variable Speed Submersible Pump" Specification Sheet; pp. 1-2; Jan. 2000; USA.
109Goulds Pumps; "Hydro-Pro Water System Tank Installation, Operation & Maintenance Instructions;" pp. 1-30; Mar. 31, 2001; Seneca Falls, NY USA.
110Goulds Pumps; "Model BFSS List Price Sheet;" Feb. 5, 2001.
111Goulds Pumps; "Pumpsmart Control Solutions" Advertisement from Industrial Equipment News; Aug. 2002; New York, NY USA.
112Goulds Pumps; Advertisement from "Pumps & Systems Magazine;" entitled "Cost Effective Pump Protection+ Energy Savings," Jan. 2002; Seneca Falls, NY.
113Grundfos Pumps Corporation; "Grundfos SQ/SQE Data Book;" pp. 1-39; Jun. 1999; Fresno, CA USA.
114Grundfos Pumps Corporation; "The New Standard in Submersible Pumps;" Brochure; pp. 1-8; Jun. 1999; Fresno, CA USA.
115Grundfos; "CU301 Installation & Operating Instructions;" Sep. 2005; pp. 1-30; Olathe, KS USA.
116Grundfos; "CU301 Installation & Operation Manual;" Apr. 2009; pp. 1-2; Undated; www.grundfos.com.
117Grundfos; "Grundfos SmartFio SQE Constant Pressure System;" Mar. 2003; pp. 1-2; USA.
118Grundfos; "JetPaq-The Complete Pumping System;" Undated Brochure; pp. 1-4; Clovis, CA USA.
119Grundfos; "SmartFio SQE Constant Pressure System;" Mar. 2002; pp. 1-4; Olathe, KS USA.
120Grundfos; "SQ/SQE-A New Standard in Submersible Pumps;" Undated Brochure; pp. 1-14; Denmark.
121Grundfos; "Uncomplicated Electronics . . . Advanced Design;" pp. 1-10; Undated.
122Hayward; "Hayward Pro-Series High-Rate Sand Filter Owner's Guide," 2002; pp. 1-4.
123ITT Corporation; "Goulds Pumps Balanced Flow Constant Pressure Controller for 2 HP Submersible Pumps;" Jun. 2005; pp. 1-4 USA.
124ITT Corporation; "Goulds Pumps Balanced Flow Constant Pressure Controller for 3 HP Submersible Pumps;" Jun. 2005; pp. 1-4; USA.
125ITT Corporation; "Goulds Pumps Balanced Flow Submersible Pump Controller;" Jul. 2007; pp. 1-12.
126ITT Corporation; "Goulds Pumps Balanced Flow;" Jul. 2006; pp. 1-8.
127ITT Red Jacket Water Products Installation, Operation and Parts Manual, dated 2009. 8 pages.
128ITT Red Jacket Water Products RJBB/RJBB2 Battery Backup Sump Pumps; May 2007, 2 pages.
129James Shirley, et al., A mechatronics and material handling systems laboratory: experiments and case studies, International Journal of Electrical Engineering Education 48/1, pp. 92-103.
130Jan Eric Thorsen-Danfoss, Technical Paper-Dynamic simulation of DH House Stations, presented by 7. Dresdner Femwärme-Kolloquium Sep. 2002, 10 pages, published in Euro Heat & Power Jun. 2003.
131Karl Johan Åström and Björn Wittenmark-Lund Institute of Technology, Adaptive Control-Second Edition, book, Copyright 1995, 589 pages, Addison-Wesley Publishing Company, United States and Canada.
132Liberty Pumps PC-Series Brochure, dated 2010. 2 pages.
133Load Controls Incorporated, product web pages including Affidavit of Christopher Butler of Internet Archive attesting to the authenticity of the web pages, dated Apr. 17, 2013, 19 pages.
134Microchip Technology Inc., PICmicro® Advanced Analog Microcontrollers for 12-Bit ADC on 8-Bit MCUs, convert to Microchip, brochure, Dec. 2000, 6 pages, Chandler, Arizona.
135Microchip Technology, Inc., PICMicro Mid-Range MCU Family Reference Manual (Dec. 1997).
136Pent Air; "Pentair IntelliTouch Operating Manual;" May 22, 2003; pp. 1-60.
137Pentair Pool Products, "IntelliFlo 4x160 a Breakthrough Energy-Efficiency and Service Life;" pp. 1-4; Nov. 2005; www.pentairpool.com.
138Pentair Pool Products, WhisperFlo Pump Owner's Manual, Jun. 5, 2001, 10 pages.
139Pentair Water Ace Pump Catalog, dated 2007, 44 pages.
140Pentair Water and Spa, Inc. "The Pool Pro's guide to Breakthrough Efficiency, Convenience & Profitability," pp. 1-8, Mar. 2006; www.pentairpool.com.
141Pentair, "Pentair RS-485 Pool Controller Adapter" Published Advertisement; Mar. 22, 2002; pp. 1-2.
142Per Brath-Danfoss Drives A/S, Towards Autonomous Control of HVAC Systems, thesis with translation of Introduction, Sep. 1999, 216 pages.
143PX-138-Deposition of Dr. Douglas C. Hopkins; pp. 1-391; 2011; taken in Civil Action 10-cv-1662.
144PX-141-Danfoss; "Whitepaper Automatic Energy Optimization;" pp. 1-4; 2011; cited in Civil Action 5:11-cv-00459.
145PX-34-Pentair; "IntelliTouch Pool & Spa Control System User's Guide"; pp. 1-129; 2011; cited in Civil Action 5:11-cv-00459; 2011.
146Rajwardhan Patil, et al., A Multi-Disciplinary Mechatronics Course with Assessment-Integrating Theory and Application through Laboratory Activities, International Journal of Engineering Education, copyright 2012, pp. 1141-1149, vol. 28, No. 5, TEMPUS Publications, Great Britain.
147Robert S. Carrow; "Electrician's Technical Reference-Variable Frequency Drives;" 2001; pp. 1-194.
148Schlumberger Limited, Oilfield Glossary, website Search Results for "pump-off", copyright 2014, 1 page.
149Shabnam Moghanrabi; "Better, Stronger, Faster;" Pool & Spa News, Sep. 3, 2004; pp. 1-5; www/poolspanews.com.
150SJE-Rhombus; "Constant Pressure Controller for Submersible Well Pumps;" Jan. 2009; pp. 1-4; Detroit Lakes, MN USA.
151SJE-Rhombus; "SubCon Variable Frequency Drive;" Dec. 2008; pp. 1-2; Detroit Lakes, MN USA.
152SJE-Rhombus; "Variable Frequency Drives for Constant Pressure Control;" Aug. 2008; pp. 1-4; Detroit Lakes, MN USA.
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154Texas Instruments, MSP430x33x-Mixed Signal Microcontrollers, SLAS 163 (Feb. 1998).
155Texas Instruments, TMS320F/C240 DSP Controllers Peripheral Library and Specific Devices, Reference Guide, Nov. 2002, 485 pages, printed in U.S.A.
156Texas Instruments, TMS320F/C240 DSP Controllers Reference Guide Peripheral Library and Specific Devices, Literature No. SPRU 161D (Nov. 2002).
157Texas Instruments, TMS320F/C240 DSP Controllers Reference Guide, Peripheral Library and Specific Devices, Jun. 1999, 474 pages.
158Texas Instruments, Zhenyu Yu and David Figoli, DSP Digital Control System Applications-AC Induction Motor Control Using Constant V/Hz Principle and Space Vector PWM Technique with TMS320C240, Application Report No. SPRA284A (Apr. 1998).
159The Basement Watchdog A/C-D/C Battery Backup Sump Pump System Instruction Manual and Safety Warnings, dated 2010. 20 pages.
160The Basement Watchdog Computer Controlled A/C-D/C Sump Pump System Instruction Manual, dated 2010. 17 pages.
161U.S. Appl. No. 12/869,570 Appeal Decision dated May 24, 2016.
162Undated Goulds Pumps "Balanced Flow Systems" Installation Record.
163USPTO Patent Trial and Appeal Board, Paper 43-Final Written Decision, Case IPR2013-00287, U.S. Pat. No. 7,704,051 B2, Nov. 19, 2014, 28 pages.
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166Waterworld, New AC Drive Series Targets Water, Wastewater Applications, magazine, Jul. 2002, 5 pages, vol. 18, Issue 7.
167Wen Technology, Inc., Unipower® HPL110 Digital Power Monitor Installation and Operation, copyright 1999, pp. 1-20, Raleigh, North Carolina.
168Wen Technology, Inc., Unipower® HPL110, HPL420 Programming Suggestions for Centrifugal Pumps, copyright 1999, 4 pages, Raleigh, North Carolina.